From: "Nir Nizry" <nir.nizry@bluesoft-inc.com>
To: <pthreads-win32@sources.redhat.com>
Subject: Problem with pthread_cond_timedwait().
Date: Mon, 22 Jul 2002 21:19:00 -0000 [thread overview]
Message-ID: <JEEHINPAHDLKGLNOLIOCKEEJCBAA.nir.nizry@bluesoft-inc.com> (raw)
Hello All,
I have a problem with pthread_cond_timedwait().
I have a system with 5 threads that in their main loop wait with a timeout
(timedwait) on a condition variable to be set.
what I get is, that sometimes a thread enters the pthread_cond_timedwait()
function, and doesn't come out, even if the timeout time arrives. after this
happens, the other threads get stuck in the mutex lock before entering the
pthread_cond_timedwait() as if the mutex is already locked.
I suspect that somehow either the pthread_cond_timedwait() function does not
release the mutex or does not return when the timeout occurs.
does someone have an idea' or know of such an incident (or maybe a bug in
pthread)??
Thanks.
Nir.
I added the code fraction where it get stucked (this is the ONLY place in
the code where the messageMutex is locked):
pthread_mutex_lock(messageMutex);
waitResult = 0;
while( m_theGeneralQueue->isEmpty() && !shouldStopThreadGlobalLoop &&
(waitResult != ETIMEDOUT))
waitResult = pthread_cond_timedwait(newMessageEvent, messageMutex,
&timeout);
pthread_mutex_unlock(messageMutex);
-----------------------------------------
mailto:nir.nizry@bluesoft-inc.com
-----------------------------------------
next reply other threads:[~2002-07-23 4:19 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-07-22 21:19 Nir Nizry [this message]
2002-07-24 0:31 ` Ross Johnson
2002-07-31 0:13 ` Ross Johnson
2005-09-27 11:13 Fu Limin
2005-09-27 13:16 ` Dmitrii Sernii
[not found] ` <1130.130.192.136.198.1127830895.squirrel@130.192.136.198>
2005-09-27 15:49 ` Dmitrii Sernii
2005-09-28 8:38 ` Fu Limin
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